A Billion Digits of Pi

http://three.onefouronefive.net/

Happy Pi Day! (3/14)

Although it's only really Pi day in the United States— where we (for some strange reason) put the month before the day and year when we write-out our date— we hope our friends from around the world can enjoy this without having to wait until July 22nd (22/7 being one representation of Pi). Besides— it won't be 3/14/15 again for another hundred years!

Here you will find, if you scroll long enough, Pi to a billion digits. Of course, as an irregular number, it goes on far longer than that. As of today people have calculated it to 2 trillion digits (2,000 times the number of maximum number of digits presented here). Don't believe me? Confirm it at MIT.

Search Pi for your favorite number:

Give me a number and I'll tell you where it occurs within the first Billion digits of Pi. For example: the year you were born, your zip code, 123456789. (or look at what people searched for over the last year)

Some people use 22/7 to represent Pi. It's only accurate this far. Don't feel bad, Plato calculated Pi to be the square root of 2 plus the square root of 3, and he was only this accurate too.4

1

Al-Khwarizim calculated pie to the 4th place in 800 AD (but he rounded-up here).5

Chinese mathematician, Liu Hui calculated Pi to this place.9

Some people use 355/113 to represent Pi. It's only accurate to this place.2

6

5

3

If you use the Square Root of 9.869604401 to represent Pi, it's only this accurate.5

8

9

7

9

3

Isaac Newton not only was famously hit in the head by an apple and invented calculus, but calculated Pi to 16 decimal places.2

3

8

4

6

2

6

4

3

3

8

3

2

7

9

5

This is the location of the first zero in Pi.0

2

8

Ludolph van Ceulen spent his life calculating the first 36 digits of Pi. When he died in 1610, these numbers were inscribed on his (now lost) tombstone.8

4

1

9

If you calculate Pi to this point, it's accuracy is sufficient for computing the circumference of a circle that surrounds the known universe with an error no greater than the radius of a hydrogen atom.7

1

6

9

3

9

9

3

7

5

1

0

5

8

2

0

9

7

4

9

4

4

5

9

2

3

0

7

8

1

6

4

0

6

2

8

6

2

0

8

9

9

8

6

2

8

0

3

4

8

2

5

3

4

2

1

1

7

0

6

7

By 1701, mathematicians had calculated Pi to this level of accuracy- to 100 decimal places.9

8

2

1

4

8

0

8

6

5

1

3

2

8

2

3

0

6

6

4

7

0

9

3

8

4

4

6

0

9

5

5

0

5

8

2

2

3

1

7

2

5

3

The first 144 digits of pie add up to 666. Spooky!5

9

4

0

8

1

2

8

4

8

1

1

1

7

4

5

0

2

8

4

1

0

2

7

0

1

9

3

8

5

2

1

1

0

5

5

5

9

6

4

4

6

2

2

9

4

8

9

5

4

9

3

0

3

8

1

9

6

4

4

2

8

8

1

0

9

7

5

6

6

5

9

3

3

4

4

6

1

2

8

4

7

5

6

4

8

2

3

3

7

8

6

7

8

3

1

6

5

2

7

1

2

0

1

9

0

9

1

4

5

6

4

8

5

6

6

9

2

3

4

6

0

3

4

8

6

1

0

4

5

4

3

2

6

6

4

8

2

1

3

3

9

3

6

0

7

2

6

0

2

4

9

1

4

1

2

7

3

7

2

4

5

8

7

0

0

6

6

0

6

3

1

5

5

8

8

1

7

4

8

8

1

5

2

0

9

2

0

9

6

2

8

2

9

2

5

4

0

9

1

7

1

5

3

6

4

3

6

7

8

9

2

5

9

0

3

6

0

0

1

1

3

3

0

5

3

0

5

4

8

8

2

0

4

6

6

5

2

1

3

8

4

1

4

6

9

5

1

9

4

1

5

1

1

6

0

9

4

3

3

0

5

7

2

7

0

3

6

5

7

5

9

5

9

1

9

5

3

0

9

2

1

8

6

1

1

7

3

8

1

9

3

2

6

1

1

7

9

3

1

0

5

1

1

8

5

4

8

0

7

4

4

6

2

3

7

9

9

6

2

7

4

9

5

6

7

3

5

1

8

8

5

7

5

2

7

2

4

8

9

1

2

2

7

9

3

8

1

8

3

0

1

1

9

4

9

1

2

9

8

3

3

6

7

3

3

6

2

4

4

0

6

5

6

6

4

3

0

8

6

0

2

1

William Shanks (who lived between 1812 and 1882) thought he calculated the first 707 digits of Pi. Unfortunately he made a mistake here, at the 528th position.3

9

4

9

4

6

3

9

5

2

2

4

7

3

7

1

9

0

7

0

2

1

7

9

8

6

0

9

4

3

7

0

2

7

7

0

5

3

9

2

1

7

1

7

6

2

9

3

1

7

6

7

5

2

3

8

4

6

7

4

8

1

8

4

6

7

6

6

9

4

0

5

1

3

2

0

0

0

5

6

8

1

2

7

1

4

5

2

6

3

5

6

0

8

2

7

7

8

5

7

7

1

3

4

2

7

5

7

7

8

9

6

0

9

1

7

3

6

3

7

1

7

8

7

2

1

4

6

8

4

4

0

9

0

1

2

2

4

9

5

3

4

3

0

1

4

6

5

4

9

5

8

5

3

7

1

0

5

0

7

9

2

2

7

9

6

8

9

2

5

8

9

2

3

5

4

2

0

1

9

9

5

6

1

1

2

1

2

9

0

2

1

9

6

0

8

6

4

0

3

4

4

1

8

1

5

9

8

1

3

6

2

9

7

7

4

7

7

1

3

0

9

9

6

0

5

1

8

7

0

7

2

1

1

3

4

This is called "Feynman's Point"- the 726nd decimal place- where you see six 9s in a row.9